Status

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For bugs in Firefox Desktop, the Mozilla Foundation's web browser. For Firefox user interface issues in menus, developer tools, bookmarks, location bar, and preferences. Many Firefox bugs will either be filed here or in the Core product. (more info)

Security

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User Story

User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9) Gecko/2008061004 Firefox/3.0
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9) Gecko/2008061004 Firefox/3.0
With today's Ajax applications many applications have large JavaScript libraries and while the JavaScript is cached between page navigations it has to be reloaded and reparsed with each new page. Ideally, the browser stores the JavaScript in a pre-parsed or pre-complied format in the cache or provides a mechanism to share the JavaScript between pages so that on a page transition the application doesn't experience the performance hit of reloading and reparsing the Java Script library. A technique used today is to share the JavaScript in a hidden iframe between pages, it would make sense that this support is native in the browser.
Reproducible: Always
Steps to Reproduce:
This is an enhancement request, steps to reproduce not applicable.